If you have been using nasal decongestants for more than 5 to 7 days, you may experience what is called rebound congestion. It is recommended to gradually stop using the products to avoid this effect. You can either stop using them immediately and tolerate the congestion for a few days, or gradually decrease the frequency of use before stopping completely. If your congestion is due to allergies, you can consider using corticosteroids nasal sprays, which are effective and safe for long-term use for most people. Your pharmacist can provide guidance on dosage and administration.